调度集中区段，一般采用（）闭塞。 A.自动 B.半自动 C.电气路签（牌） D.自动

用方框里的适当的句子补全对话（每空1分，共5分）

A. I think it's short and ugly.             B. I don’t like sunglasses. C. You should wear sunglasses. D. I don't like my haircut. E. It's too hot to wear a hat. F. It’s too long. G. Short hairstyle is very popular.

A: Hi, Gina! Why do you wear a hat?
B:     小题1:    
A: What's wrong with your hair?
B:    小题2:     
A: Let me have a look. Wow, you have a new look. Now, you're different. You are smarter than before.
B: But it looks like boys' hairstyle. I wear a hat so that nobody can see it.
A: But now it's summer.    小题3:     
B: What should I do?
A: I have an idea.    小题4:      
B: Oh, no. I don't like to do that.
A: Then I think you should cut your hair much shorter.    小题5:    
B: Yes, that's a good idea.